Darrell W. Calvin, Jr. is a trial attorney with Martin, Disiere, Jefferson & Wisdom, LLP. Mr. Calvin is in his 23rd year of practicing law. He has spent the majority of his career in the field of insurance defense representing commercial as well as individual insured clients in personal injury lawsuits. He graduated summa cum laude, second in his class, from law school and began his career serving the citizens of Dallas County, Texas as a misdemeanor and then felony prosecutor. He was a full equity partner at one of the oldest insurance defense firms in Dallas and ran his own insurance defense firm for a number of years before joining Martin, Disiere, Jefferson & Wisdom. He has been consistently recognized by his peers in the Texas Bar by being repeatedly named a Texas Super Lawyer, a Thomson Reuters Service. Mr. Calvin believes the practice of law is a privilege never to be taken for granted and a lawyer's first duty is to always put his or her client before themselves.

Honors & Awards

Named a Texas Super Lawyer, a Thomson Reuters Service 2013–2017

Professional Affiliations


State Bar of Texas

Dallas Bar Association

Texas Association of Defense Counsel

News & Insights


A Texas Insurance Adjuster’s Guide to Wrongful Death and Survival Claims; March 2009

Texas Nuts and Bolts: A Basic Overview For Insurance Adjusters On Texas Law That May Be Encountered In Handling Routine Liability Claims; October 2013



Texas Wesleyan University School of Law, J. D., 1999, summa cum laude 

University of North Texas, B.A., 1995


  • Texas State Courts
  • United States District Court, Northern, Southern, Eastern and Western Districts of Texas 
  • The Supreme Court of the United States of America


  • Martin, Disiere, Jefferson & Wisdom 2019 - Present
  • Nationwide Insurance 2018 -2019
  • Crane Lewis Brogdon, LLP 2016–2017
  • The Calvin Law Firm, PLLC 2013–2016 
  • Touchstone, Bernays, Johnston, Beall, Smith & Stollenwerck, LLP 2002–2012 
  • Dallas County District Attorney's Office 1999–2001
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